Steam-meter.



No. 888,670; PATENTED MAR. 31, 1908.

0.- E, sARGENT. STEAM METER.

APPLICATION FILED MAY 6, 1905,

5 S32E15 5mm 1.

@WJ/ v a5 9 PATENTED MAR. 31, 1908.

SARGENT,

STEAM METER.

APPLICATION FILED MAY 6, 1905,

5 SHEETS-SHEET 2.

6 5% QQZZMV I" mall 6 S HEETSSHEET 3.

PATENTED MAR.'31, 190s.

(3 E. SARGBNT. STEAM METER.

APPLICATION FILED MAY 6, 1905,

No. 883,670. PATENTED MAR. 31, 1908. G BK SARGBNT.

STEAM METER.

APPLICATION FILED MAY 6, 1905,

5 SHEETS-SHEET 4.

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PATENTED MAR. 31, 1908. U. E. SARGBNT. I STEAM METER.

APPLICATION FILED MAY 6, 1905.

5 SHEETS-SHEET 5.

' movement.

CHARLES E. SARGENT, OF CHICAGO, ILLINOIS.

STEAM-METER.

No. ssaevo.

Specification 01' Letters Patent.

Patented March 31, 1905.

Application filed May 6, 1905. Serial No. 259,083.

To all whom it may concern:

Be it known that I, (JnARLEs E. SARGENT, a citizen of the United States of America, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful I111 rovements in Steamd /ieters, of which the to lowing is a specification.

My invention relates to improvements in steam meters and is fully described and explained in this specification, andsho wn in the accompanying drawings, in Which Figure 1 is an elevation of my improved device; Fig. 2 is a central longitudinal section on line 2-2 of Fig. 4 showing the dcvice in the position it occupies when no steam is passing through it; Fig. 3 is a section in the line 83 of Fig. 2, showing the parts in the position which they occupy when steam is passing through the meter Fig. 4 is a section in the line 4-4of Fig. 2; Fig. 5 is a section in the line 5-5 of'Fig. 2; Fig. 6 is a section in the line 6-6 of Fig.2, Fig. 7 is a section in the line '77 of Fig. 2 on an enlar ed scale; Fig. 8 is a horizontal section in t e line 8-8 of Fig. 9; Fig. 9 is an elevation of the pressure-indicating-portion of the device looking in the same direction as in Fig. 3, and Fig. 10 is a section in the line 10-10 of Fig. 7.'

My present device is intended as an improvement over a similar device shown in my Patent No. 729,511, dated May 26, 1903. In the device of said patent the construction is such that the oppet valve rises but a short distance in all, and as a result, it is necessary to use, instead of a simple direct connection between the puppet valve and the needle, a multiplying device which will give the needle a considerable amplitude of movement. Furthermore, the pressure-indicat ing device has but small total movement and it is, therefore, necessary to -1nultiply its My present invention consists in substituting for the uppct valve of my prior patent a puppet va ve so constructed as to move through along space and to combine with it a sensitive pressure-indicating device so that all multiplying means are dispensed with.

Referrlng to the drawings, A, is a suitable valve casing provided with an upper removable head, a. Below the casing, A, and se cured thereto is a cup, A, which is cylin-' drical inform, but which has a forward projection, a. The cu'p is secured to the casing,. A, by bolts, (1?, here shown as three in numher and six correspondin holes are provided in the casing to receive the ends of the bolts so that the cup can be turned around for a purpose which will hereafter a pear. The cup, A isprovided with a smal outlet pipe, a which communicates with a surge tank or sewer.

The casing, A, is provided with a partially cylindrical partition,- a, inclosing a chamber into which opens an induction port, X, and secured to the top of this partition, 0., is a frusto conical, hollow, downwardly open cup, A provided with a central hollow boss, a, secured to a corresponding boss, a", in the bottom of the valve-casing, A. The hollow frustro-conical cup, A communicates with the space inside the partition, of, and this cup and partition divides the valve-casing into induction and eduction chambers, the induction chamber being that spacewithin said cup and wall, and the eduction chamber being that space within the casin and outside the same. An eduction port, F, communicates with the eduction chamber. The eduction and induction chambers are connected by a horizontal slot, 17, near the top of the frustoconical cup, A. A frusto-conical valve, B, its over the frusto-conical cup, A, and Seats on a shoulder, a, at the lower edge of said cup. A perforation, (1.", at the top of the frusto-conical cup, A admits pressure to the end of the valve, B. A hollow valve stem, 11, extends through the boss, a, guiding the valve, and'said stem is keyed against rotation in a boss, 0, projecting upwards from a plate, i), secured to the bottom of the valve casino, A. This plate, 0, is best seen in Fi 6, and it will be noted that it is provided wit slots, 0 through which the attaching screws extend, whereby it may be angularly adjusted.

Secured to the lower end of the hollow valve stem, 5),, is a Bourdonspring, D, the curve of which lies in a horizontal plane and the hollow of which communicates .with the hollow of thejvalve stem, so that pressure from the top of the valve, B, 'will'be trans mitted to said spring. The free end, d, of the Bourdon s mug is connected by an adjustable link, d, to one end o'la needle, E, pivoted between its ends. Movement of the spring is limited in one direction by an adjustable screw! or stop, (1 It will be seen that an increase of pressure in the motor will straighten the Bourdon spring and will consequently move the point of the needle upl Oi) 'm front of a dial, F, on the front of the casing, A.

The operation of my improved device is substantially as follows: Starting with the parts as shown in Fig. 2, if vapor under pressure is introduced at the induction port, X, it will pass u through the frusto-contcal cup, A, and reac 1 the lower surface of the valve, B, which it' will raise. As the valve rises, pressure on the eduction side thereof will increase and the valve will linally cease to rise when the ressure on the two' sides becomes equal. hen this point is reached it will be found that the absolute pressure in the induction chamber is greater than that in the eduction chamber, because the area of the valve exposed to pressure in the induction chamber is less than the area of the valve exposed to pressure in the eduction chamber. In other words, a given pressure in the eduction chamber will balance a slightly greater pressure in the induction chamber. As the valve areas exposed in the. two chambers bear a constant relation to each other, the absolute dil'l'crencc in pressureon the two sides of the valve. will constantly vary l'or various absolute pressures, but the ratio between the pressures on the opposite sides will be constant. it is a well known law of gases, that the greater the dill'erence in the pressure between the two sides of a given opening, the greater the weight of gas which will ass through, or to put the matter in anot er way, if the absolute pressure is kept constant on one side, the greater the dill'erence in pressure between the two sides of the opening, the greater the volume which will,

ass through. This is substantially what is indicated b vertical rise oi the valve of my improved evice. 11' the absolute ressure on the'cduction side of the device )0 kept constant and still the valve rises this means that a greater volume of gas or steam is passing through. Owing to the peculiar form of the valve of my improved device, the valve is not fully opened until a very considerable vertical movement has taken place, and as a result, a scale can properly be drawn which will show the volume passing through by direct reading from the valve without the interposition of any inovement-mult'iplying device. It will be seen that as the valve rises, the needle moves 1] ward at the same speed so that when the va vc reaches the top hmit of its movement the indicating point on the needle has reached the top of the dial.

To indicate weight of steam it is necessary not only to consider volume, but absolute oint, e, which when thepressure, and this is taken care of by the;

i Bourdon s )ring which is in direct connection through' the hollow valve stem with the eductlon chamber. It will be evident that "if the valve remains stationary, 1'. e. if the volume remains constant and the absolute pressure increases, the weight will increase. The Bourdon spring is so sensitive that its movements can be read directlyon the dial. As the pressure increases the indicating point on the needle swings to the right so cating point shows the speed with which steam is passing through by weight. The dial is made to read in the number of pounds per hour which is passing through.

Meters oi this class are in practice set up in the steam supply pipes of engines or other steam using devices, and the eduction ports must be next. the engine. In engine rooms and the like it is frequently the case that the steam pipes run close to the wall so that only one side of the device is visible when set up in this manner. To avoid the necessity of making right and left hand meters the casing, A, is provided with an extra dial at its rear side, so that the meter can be reversed. This is done by removing the cup, A, and releasing the plate, C, from engagement with the casing, A. The valve stem and plate, C, can then be turned around so to bring the needle on the opposite side of the device, after which the plate, C, can be placed in position and the. needle adjusted by turning said plate slightly upon its su )porting screws. The cup, A, is then replaced in reversed position so that the projection, a, is on the opposite side of the device.

I realize that considerable variation is possible in the details of the construction without departing from the spirit of the invention, and 1 therefore do not intend to and described.

I claim as new and desire to secure by Letters Patent i l. The combination with a casing, of a trustoconical partition within the same, a

said frusto-conical partition, 8. frusto-conical valve. seating over said partition and inclosing perforations therein, a device capable of being effected by pressure carried by said space within said casing, and an indicator operated by said device.

2. The combinatiomwith a casing havin inlet and outlet openings, of a frusto conicts partition beneath which the inlet o ening enters and between the same and t 0 exhaust opening, a frusto-conical valve seatclosing perforations therein, a hollow valve stem carried by said valve and commum limit myself to the specific form herein shown passage for the entrance of vapor beneath eating with the vapor in said casing, and indi-.

, that at any moment the position of the indivalve and having communication with the ing over said frusto-conical partition and innoting mechanism communicating with th hollow in said valve stem and oarrid by sin d valve stem, said indicating li'li-Pfillfifllifil) be. constructed and arranged to perform; on in.- dic-nting movement with certain oi its parts under the influence of pressnro, wher li f said 'ii'idimiting n'ieolmnisni is moved bodily as the Volvo llSQS and performs a second nu, [CHM-Mb indepondont of its bodily inovoimmt as the pressure VELIIGS.

3. Tho ooinliiinotion with a from: having inlet. and outlet openings, of a irns'towonical partition beneath which the inlet oywning enters and between the some and the oxliaust opening, a irusto-oonical valve seating over said frusbo-oonical partiiion and inclos-' ing perforations therein, said lrusto-conicol partition having on opening in its top whereby vapor reaches the lower surface of said Pronto-conical valve, 21 PKQSsLlYfi-fiflltlflifid in- (limiting device, operniive mnneotions be arranged to nminiiuin n oonslant ratio bo Wrnon tho Oilfd0l1 spring and the interior of the casing, and a needle carried by the Volvo and actuated by the Bourdon spring.

In a device of he- (lilSS described, the

combination pith & 'iran'io halving ind notion and oi'luotion ports, a valve arranged to control a ponaogo-way through said frame and o, vzdvo si'om, of n prossui'o-indicating device oa i'icd by the Volvo stein, zinoodle carried by the valve stem and actuated by the prnssuri-a-indicnting device, 21 cup secured to tho bottom of the i'i'znnn and having 1. forward projection to receive the needle, two dials on opposiio sides oi the ironic and moans for swam-inn, the cup in two dinnmtricall opposito positions and guiding the \fiLlVO stem in positions dinnwtri zz1lly opposite.

iliooooniy ol' (fool; and Stain of Illinois, this 

